The standard enthalpy of formation of NH 3 is - 46.0 kJ mol -1 . If the enthalpy of…
Chemistry · JEE Main · NTA Exams — Chemical Thermodynamics
The standard enthalpy of formation of NH3 is - 46.0 kJ mol-1. If the enthalpy of formation of H2 from its atoms is - 436 kJ mol-1 and that of N2 is - 712 kJ mol-1, the average bond enthalpy of N-H bond in NH3 is:
- - 965 kJ mol-1
- + 352 kJ mol-1
- + 1056 kJ mol-1
- - 1102 kJ mol-1
Answer
(B) + 352 kJ mol -1
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